When configuring an API Gateway on a FortiWeb appliance, it's essential to include specific elements to ensure proper functionality and security. Two critical configuration elements are:

Defining Rate Limits: Implementing rate limits is crucial to control the number of requests a client can make to the API within a specified timeframe. This helps prevent abuse, such as denial-of-service attacks, by limiting excessive requests from clients.

Defining URL Prefixes: Specifying URL prefixes allows the FortiWeb appliance to identify and manage API requests accurately. By defining these prefixes, the appliance can route and process API calls correctly, ensuring that only legitimate traffic reaches the backend services.

These configurations align with Fortinet's best practices for setting up an API Gateway policy. While the exact steps may vary depending on the FortiWeb firmware version, the general process involves navigating to the Web Application Firewall section, selecting the API Gateway Policy tab, and configuring the necessary parameters, including rate limits and URL prefixes.